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Thursday, August 14, 2008

Is Plain Carbonated Water Bad for Teeth?

The short answer: No, plain carbonated water is not harmful to teeth; however, soda, which contains sugar, is harmful because it contributes to tooth decay.
All the non sugar related acids in soda (including carbonic acid) are so soluble in water that they are washed off the teeth almost immediately before they can cause much decalcification of the tooth structure. On the other hand, the sugar in regular soda is very sticky and remains on the teeth for a long time.1
In other words a carbonated drink without sugar is not harmful to teeth.2 (The flavoring probably has MSG, which we'll rail against another day.)
According to a report published in the March / April edition of General Dentistry, phosphoric acid in soda causes tooth enamel erosion, even with minimal exposure.3
  1. Tooth Decay. (Accessed 9/5/2008.)
  2. Diet Sodas Aren't So Good for Teeth. (Accessed 9/5/2008.)
  3. Phosphoric acid in sodas nearly as damaging to teeth as battery acid. (Accessed 9/5/2008.)


garydrew01 said...

Plain carbonated water isn't bad for the teeth. It doesn't contain any organism which may harm the teeth. And if it does, just go to a specialist dentist and ask for a help;)

Claudio said...

Yes , depends on the pH . pH is important ,in general, drinks with a pH below 5-5.7 have been known to trigger dental erosion effects ( the problem is not the CO2 but the high acidic of "soft" drinks ) .
So drink , but conscientiously .